package com.lagou.edu.conf;

import org.springframework.amqp.core.*;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;


@Configuration
public class RabbitConfig {
	@Bean
	public Queue queue() {
		Map<String, Object> props = new HashMap<>();
		// 消息的生存时间 10s
		props.put("x-message-ttl", 10000);
		// 设置该队列所关联的死信交换器（当队列消息TTL到期后依然没有消费，则加 入死信队列）
		props.put("x-dead-letter-exchange", "ex.pay.dlx");
		// 设置该队列所关联的死信交换器的routingKey，如果没有特殊指定，使用原 队列的routingKey
		props.put("x-dead-letter-routing-key", "pay.dlx");
		Queue queue = new Queue("q.pay", false, false, false, props);
		return queue;
	}

	@Bean
	public Queue queueDlx() {
		Queue queue = new Queue("q.pay.dlx", false, false, false);
		return queue;
	}

	@Bean
	public Exchange exchange() {
		DirectExchange exchange = new DirectExchange("ex.pay", false, false, null);
		return exchange;
	}

	/*** 死信交换器 * @return */
	@Bean
	public Exchange exchangeDlx() {
		DirectExchange exchange = new DirectExchange("ex.pay.dlx", false, false, null);
		return exchange;
	}

	@Bean
	public Binding binding() {
		return BindingBuilder.bind(queue()).to(exchange()).with("pay").noargs();
	}

	/*** 死信交换器绑定死信队列 * @return */
	@Bean
	public Binding bindingDlx() {
		return BindingBuilder.bind(queueDlx()).to(exchangeDlx()).with("pay.dlx").noargs();
	}
}
